11.76M on input D (+760k) with a simple coeff change

Of course i tried different coeffs before hitting a good one

main.go

@@ -165,7 +165,7 @@ func Choose(c *Car) *Ride {
 		lenOfRide := r.length()
 		total := max(c.distanceTo(r.a, r.b), r.s-c.Arrival) + lenOfRide
 		// fmt.Printf("%d/%d\n", lenOfRide, total)
-		if bestRide == nil || lenOfRide*bestTotal > total*bestLenOfRide {
+		if bestRide == nil || lenOfRide*bestTotal > 90*total*bestLenOfRide {
 			bestLenOfRide = lenOfRide
 			bestTotal = total
 			bestRide = r