endless loop dilemma
You need a combination of red and blue lines. (Or forward and backward acceleration lines.)
All blue will make it slow down and stop; all red will make it speed up and crash.
I don't know about making a loop go round FOREVER, but it's certainly possible to make it keep going for several minutes. After that, you'll probably get bored of watching, anyway.
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i was just wondering if its possible to make a loop that goes on forever, because whenever i try it always goes for a couple times and the crashes due to change in speed.