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Grade Problem?

1288 Views 7 Replies 6 Participants Last post by  CCSII

From a book cover mentioned at BoingBoing
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Problem.... what problem ? ?
the ultimate derailer?
energy-saving system with gravitycars....
keep your arms and legs inside the car at all times, hold on tight and have fun!
I have the distinct impression that keeping my arms and legs inside the car would be the least of my worries... keeping me inside my body would take precedence.
Is this one of those new-fangled hump yards?
1 - 8 of 8 Posts
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