Algodoo

I see what you did and believe it to comply with the rules, so I admit defeat. Good work.

Very clever, but how did you get the car body to not rotate wihtout using InertiaMultiplier or scripts?

welp, the car's body is attached to a circle that has infinite inertiamultiplier. From what I see, there is nothing in the rules that stops me from doing this, so I took advantage of it

update: to prevent potential disqualification, I've decided to change the inertiamultipler value of the circle from infinity to a more reasonable number (10,000), now the car body should rotate.

I think I see a possible "issue" here (sorry, Faytree). I ran the simulation many times, and occasionally (more often than not) one of those super long springs would make contact with the timer, stopping it well before the car's body actually reaches it. It may make a difference of only a few milliseconds, but that might be enough to win over someone else's car.

In any case, good job!

Since the green circles are part of the car, I don't think that matters.

P.S. I changed my mind. Since the springs are power sources, I don't think they comply with the rules.

pretty cool ngl