Fun car challenges for car club event?

[Chevykevv]

We're trying to come up with some driving challenges for our show next year, along the lines of what we had to do in Luxembourg.

No.1 was to drive between two movable posts that you gauge is the width of your car, smallest gap between mirrors wins.
No.2 is draw a chalk line on your tyre and try and drive one rotation to get the line to stop in the same position, closest wins.

Anybody got any more?

[valais]

Two garages laid out in chalk and with cones. Road laid out infront in chalk with a cone in the middle of the "street"

Time challenge to do a 360 around the cone, reverse park into garage one, pull out around the cone and then reverse into garage two? If that makes sense...