had my shee for not evan two days, and i have a 1/4 mile long gravel driveway with a good size knoll in the middle,, so i was showing my buddies the power of the shee by hauling 5th gear wheelies off this hill in my driveway, well my buddy on his 200x 3-wheeler thought he would be funny and haul a wheelie on the other side( knowing that i'm coming mind you ) so you can already see where this goes........ i had just enough time to set the front down and lock up all 4 tires .. so i don't know how fast it goes in any given gear but i'm guessing i was around 50mph when we hit.... me and the shee flipped over frontwards, my buddy ended up like 20 feet out in the field, i kinda just hit the ground, rolled and jumped up on my feet, and grabbed the shee and flipped it back over, then realized i was hurtin a little, just some scrapes and bruises for me and the shee