...how many pistons do you own? Air compressors don't count - they need to be used to power a vehicle so technically, a steam train would count, but a compressor would not. Spouse's pistons do count, but not girlfriends', parents', or childrens' (unless your kid's car's title is in your name). As you're guessing by now, yes, there were some pretty significant disagreements over the rules.
Jeez, what a bunch of cheaters

I want to see each of you riding your weed eater, chain saw, pressure washer or generator. The RULES

say "they need to be used to power a vehicle..." The definition of VEHICLE is [vee-i-kuhl or, sometimes, vee-hi-] –noun 1. any means in or by which someone travels or something is carried or conveyed; a means of conveyance or transport: a motor vehicle; space vehicles.
2. a conveyance moving on wheels, runners, tracks, or the like, as a cart, sled, automobile, or tractor.

I have:
Lotus 4
Corvette 8
Silverado 8
Harley Streetglide 2
Harley Lowrider 2
Polaris ATV 2
Toro ZRT 2
TOTAL 28
Dave has been adjusted by 2 for deletion of weed eater and chainsaw - 24 (RC plane... really

)
Russ has been adjusted by 8 for deletion of weed eater, pressure washer and generator - 38
Chris has been adjusted by 3 for deletion of weed eater, chainsaw and pressure washer - 17