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xkcd #3244: Pullback Drive
(thelemmy.club)
Title text:
"How does the spring not run out almost immediately?" "We pull it back REALLY far."
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3244/
Exactly what I'm looking for, I live on a mountain and work in the valley.
For this to work, you've gotta bring more weight down than you do back up.
Thankfully, you can just leave all your hopes and dreams at the workplace to make your car lighter on the way back!
Also your poop, drink coffee on the way in
Or get free delivery of dumbbells and other heavy stuff to your house and send them back from your workplace.
So you reverse the car to work and then coast your way home on spring power? I guess you'd have to go the long way into work.
Sounds like a gravity battery.