With using Nitrogen instead of CO2 for filling tires. Isnt Nitrogen stored at higher PSI (3000psi?) as opposed to CO2 (1200-1800psi).

Doesnt that pose a greater risk if it were dropped, truck rolled, valve knocked off, etc??
Just curious, I am very happy with my Bar hookup's CO2 setup. I dont plan on ever going to Nitrogen.
I also have the adapter for hooking my CO2 tank/regulator to a keg.
When I'm having a BBQ I'll put a 1/4 keg on ice and hook it up to the CO2 tank. Nothing is better than beer on tap.
I am so obsessed with this now that I drilled a hole in my wine cooler/fridge (no freezer) and run a quarter keg or 5 gallon keg (depending on my mood/parties) of John Harvard's all of the time. I rotate every month with a different brew.
Great alternative use for CO2 when not offroading!!!