DO IT!
Advertise the event as a fundraiser for a good cause, a community-based youth activity that gets kids off the streets and promotes self-esteem and self reliance and turns out good citizens.
Say that not only will you crush a Honda Civic, you will crush a line of cars!
Pay for entry, ALL funds going to support the Cadets.
And then crush a Honda Civic, and any other Matchbox cars you can line up end to end.
Anyone that complains that they didn't get what they paid their money to see is a bum!