[Question] Is there a good source for larger robotic chassis?

I am looking for a (preferably) tracked chassis about the size of an ATV (width/length) that will allow me to hit speeds of about 7 mph. MY other option is to either: * A) build it myself * B) use an ATV and modify it (which I really really do not want to do)

Does anyone know of a good source?

submitted by /u/ennalta
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