I never had trouble riding my bikes, nor my 4 wheelers since I got them this spring.
But when I was a teenager. I had a built up 352cc bored and stroked 300EX built by Four Stroke tech. That thing would move out. I had it geared up to keep the front end on the ground. I never clocked it but I'm sure she'd crank out over 70mph.
I'm out riding around minding my own business on gravel unmarked roads behind my dads house. Noone lives up there, ..nothing but open fields and trees. I was cruising along about 1/4 throttle and a cop comes up behind me, flips his lights on. I nailed it and took off. He chased me on a crappy gravel road for 5 miles, I turned off into the woods and went down a hill and into a valley. I shut the bike down and looked back. He is parked up on top the hill and hes got a megaphone out and started screaming into that he would wait all day for me to come out. I was a cocky 16 year old and I hollered back, I'll be coming up on top of mooney hill in 10 minutes! Come on! He jumped back in his car and took off. I went back up the hill and went home as he was heading about 5 miles in the wrong way.