Don't know why it took me so long

R4Sedan said
Just be careful it don't start a fire. Ya know tip over or something like that.

73AbodEE said
Those little heaters have kill switches if they tip over. Excellent idea I'm going to get one for my truck

Yes they do, and this one also has overheat protection and two temp settings.
Low works just fine, and I set it in the middle of the floor board in front of the seat facing forward so it has a couple of feet clear.
It also has a thermostat control so you can pick the temp you want it to maintain.
Got this one because it is smaller.