You really don't have to drive around needlessly. I observed an Imperial Beach city cop handling an accident with a rear end collision on I-5 south. I headed west on the freeway that parallels the border enroute to I-805 north to go home. About 1 mile along that route I saw a vehicle driving too slow due to a blown front left tire. The front of the vehicle was smashed. I put 2+2 together. I used the ham radio autopatch to call CHP dispatch (cell phones didn't exist at that time). I reported my location and a pair of CHP and on SDPD car surrounded the vehicle and pulled it over. Two Mexicans emerged. They couldn't even stand up. Both were combative and trying to beat the crap out of the CHP officers. I continued on my way home at that point. No extra CO2 necessary. Just two felony hit and run drunks removed from the road.
A couple years ago I was driving in Pocatello. A drunk entered the street just ahead of me. The guy was bouncing off the curbs (both sides). My wife called Pocatello PD dispatch directly. They were too busy to bother. The guy continued bouncing off curbs and running stop signs. I decided that it wasn't worth any further effort with Pocatello PD. The report was made on a TAPED line. Had the drunk killed someone, I would have made sure that the tape was pulled and the negligent boobs at Pocatello PD were exposed.