I agree not to put it in automobile tires for no reason, but it is great stuff for just about ANY type of off road vehicle.
TRUE STORY time..
2007 my friend and i are riding power lines in upstate ny.
We are at least 15 miles out from our trucks. I get a flat. Immediate panic sets in. Fortunately houses were close by off the trail and i snagged a guy my age very close to where i broke down working in his garage. After asking for help, he pulled out plugs, rubber plug cement and a compressor for me. Got me going back on the trail. I thanked him profusely and tipped him a $20.
I nervously limped slowly back to the truck. After that incident, my buddy and i both put slime in all four tires as a preventative. It helped more than once. When on the trail and you see slime on the outside of a tire and then it stops, that means it sealed a puncture and is doing its job.
Most guys on atv/4 wheel drive forums do the same.
In summary, off road tires, definately, on road, only in an emergency.