[Steve A]

To add to the comments already made, be prepared for a hard day and have cold beers in fridge ready. We based ours on fastest lap competition and offered selection of cars. Naturally everyone wanted to know which would be the fastest car, and all assumed it was the F1 Ferrari even though the tyres were ****. Few cars did get wrecked, don't put your treasured cars out. Hardest £50-00 you will ever earn but massive kudos as coolest Dad.
Good luck