If you aren't a fan of filling your lungs with rubber smoke, a hole saw and cordless drill will ensure your tires stay on the bottom.
I've never made spawning areas, just let nature figure it out for herself. Seems to work okay.
"Forget pounds and ounces, I'm figuring displacement!"
If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.
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