diff --git a/src/idz/db/car.ts b/src/idz/db/car.ts
new file mode 100644
index 0000000..276d7d7
--- /dev/null
+++ b/src/idz/db/car.ts
@@ -0,0 +1,149 @@
+import { Client } from "pg";
+import * as sql from "sql-bricks-postgres";
+
+import { _findProfile } from "./_util";
+import { ExtId } from "../model/base";
+import { Car, CarSelector } from "../model/car";
+import { Profile } from "../model/profile";
+import { CarRepository } from "../repo";
+import { generateId } from "../../db";
+
+function _extractRow(row: any): Car {
+  return {
+    selector: row.selector,
+    field_00: row.field_00,
+    field_02: row.field_02,
+    field_04: row.field_04,
+    field_46: row.field_46,
+    field_48: row.field_48,
+    field_4A: row.field_4A,
+    field_4C: row.field_4C,
+    field_50_lo: row.field_50_lo,
+    field_50_hi: row.field_50_hi,
+    field_58: row.field_58,
+    field_5A: row.field_5A,
+    field_5B: row.field_5B,
+    field_5C: row.field_5C,
+    field_5E: row.field_5E,
+  };
+}
+
+export class SqlCarRepository implements CarRepository {
+  constructor(private readonly _conn: Client) {}
+
+  async countCars(extId: ExtId<Profile>): Promise<number> {
+    const countSql = sql
+      .select("count(*) result")
+      .from("idz.car c")
+      .join("idz.profile p", { "c.profile_id": "p.id" })
+      .where("p.ext_id", extId)
+      .toParams();
+
+    const { rows } = await this._conn.query(countSql);
+    const row = rows[0];
+
+    return parseInt(row.result, 10);
+  }
+
+  async loadAllCars(extId: ExtId<Profile>): Promise<Car[]> {
+    const loadSql = sql
+      .select("c.*")
+      .from("idz.car c")
+      .join("idz.profile p", { "c.profile_id": "p.id" })
+      .where("p.ext_id", extId)
+      .toParams();
+
+    const { rows } = await this._conn.query(loadSql);
+
+    return rows.map(_extractRow);
+  }
+
+  async loadSelectedCar(extId: ExtId<Profile>): Promise<Car> {
+    const loadSql = sql
+      .select("c.*")
+      .from("idz.car c")
+      .join("idz.car_selection s", { "c.id": "s.car_id" })
+      .join("idz.profile p", { "s.id": "p.id" })
+      .where("p.ext_id", extId)
+      .toParams();
+
+    const { rows } = await this._conn.query(loadSql);
+
+    return _extractRow(rows[0]);
+  }
+
+  async saveCar(extId: ExtId<Profile>, car: Car): Promise<void> {
+    const saveSql = sql
+      .insert("idz.car", {
+        id: generateId(),
+        profile_id: await _findProfile(this._conn, extId),
+        selector: car.selector,
+        field_00: car.field_00,
+        field_02: car.field_02,
+        field_04: car.field_04,
+        field_46: car.field_46,
+        field_48: car.field_48,
+        field_4A: car.field_4A,
+        field_4C: car.field_4C,
+        field_50_lo: car.field_50_lo,
+        field_50_hi: car.field_50_hi,
+        field_58: car.field_58,
+        field_5A: car.field_5A,
+        field_5B: car.field_5B,
+        field_5C: car.field_5C,
+        field_5E: car.field_5E,
+      })
+      .onConflict("profile_id", "selector")
+      .doUpdate(
+        "field_00",
+        "field_02",
+        "field_04",
+        "field_46",
+        "field_48",
+        "field_4A",
+        "field_4C",
+        "field_50_lo",
+        "field_50_hi",
+        "field_58",
+        "field_5A",
+        "field_5B",
+        "field_5C",
+        "field_5E"
+      )
+      .toParams();
+
+    await this._conn.query(saveSql);
+  }
+
+  async saveSelection(
+    extId: ExtId<Profile>,
+    selector: CarSelector
+  ): Promise<void> {
+    const profileId = await _findProfile(this._conn, extId);
+
+    const findSql = sql
+      .select("c.id")
+      .from("idz.car c")
+      .where("c.profile_id", profileId)
+      .where("c.selector", selector)
+      .toParams();
+
+    const { rows } = await this._conn.query(findSql);
+    const row = rows[0];
+
+    if (row === undefined) {
+      throw new Error("Selected car not found");
+    }
+
+    const saveSql = sql
+      .insert("idz.car", {
+        id: profileId,
+        car_id: row.id,
+      })
+      .onConflict("id")
+      .doUpdate("car_id")
+      .toParams();
+
+    await this._conn.query(saveSql);
+  }
+}