Quote:
Originally Posted by EricH
A LIDAR unit on the front might do it. Only problem is, those cost a bit. You could also try some longer-range laser rangefinders (again, cost could be an issue).
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Just looked some up on eBay since most vendors don't just toss their prices online. I wasn't quite expecting them to be worth orders of magnitude of the cars we're looking at for using!

I'll have to do more searching after work.