Update, hope it helps others. Did what I should have done to start with instead of asking on a forum. I called Progressive and long story short this is what I learned:
It is insured just like any motorized vehicle with a few exceptions:
1. Total cost replacement for 4 years on a new purchase,after that it would be replaced at ACV
2. Unlike most autos policies it has disappearing deductibles .( I said most Lol)
3.Vacation liability (not sure if auto policies offer something similar
Other than a few minor changes or insurance jargon these were the main differences.