If you're wringing out the throttle at interstate speeds your 800's broken or you are pulling a drag chute.
Even my WR250R with big flappy backpacks hanging over the edge loaded with me and extra junk still had a little left at 70.
2014 KTM 690 Enduro R (21/18 & 17/17's)
2008 Subaru STi (e85 powered beast, ~500hp)
1998 Land Rover Discovery (daily driver)
Past: 800xc, WR250R, 450EXC-R, KLR