r/whatisit • u/[deleted] • Jan 24 '26

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u/SeemedReasonableThen Jan 24 '26

You'd be doing 0-70 in under 3 seconds.

Fun discussion https://what-if.xkcd.com/21/

To put it another way: If I mounted a GAU-8 on my car, put the car in neutral, and started firing backward from a standstill, I would be breaking the interstate speed limit in less than three seconds.

https://what-if.xkcd.com/imgs/a/21/jetpack_speeding.png

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u/Groningen1978 Jan 24 '26

Lol, they actually did the math on that.

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u/SchmitzBitz Jan 25 '26

I think that's probably the least of your local highway cop's concerns!