I will say the only time I crashed a car while intoxicated wasn't due to alcohol or benzos, but rather phenobarbital. I hadn't intended to drive intoxicated on it; when I took the pills (it was alot of pills) I had intended to time it out so that it wouldn't kick in until I had gotten home. It seemed to work out fine, but I got the timing a bit off apparently because I ended up careening into one of those large construction bins just a few doors down from my house. It wasn't too bad but my car got pretty seriously fucked up, thousands of dollars of damage. What's worse is that I was driving my 3rd generation Mazda RX7 (a 1995 model, a very rare car)
I never got in trouble for it though
*Though it isn't entirely accurate that I haven't crashed a car while intoxicated. I once got into a little fender bender while very intoxicated on the original forumulation of perdue oxycontin. It was night and someone was backing their car out of the street in front of a bar. Due to the oxycodone-induced slowed reaction time and double vision, i misjudged when to stop and ended up bumping into the car at very low speed. There was zero damage to the persons car that I hit because it was so slow (and it was a pickup truck that was fucked up anyhow, my car got a little dented).
The crazy part is what happened next, I get out of the car, pissed off and confrontational (the person who was driving was probably a little at fault too), but I am obviously fucked up and intoxicated (this was when I was injecting the pills, I was only 18). People start coming out of the bar due to the commotion and some lady yells, "grab his keys!". The crowd wrestles the keys away from me and tosses it to some guy, then i break from the crowd and am able to snatch them back. This happens a few more times, they take my keys, toss it someone, i get them back. Then someone tries to throw the keys on the roof of the bar since it is clear how determined I am on getting them back, but they miss and the keys windup in the parking lot. I run, grab the keys, and no one seems to be willing to try to take them from me anymore, at which point some guy asks me if I live around there, I said yes, and then he offers to drive me home if i give him my keys.
He made good on his word, and he drove me home in my own car (me in the passenger seat) and his buddy followed in another car. I guess he felt bad for this 18 year old kid who would have definitely gotten arrested if the cops showed up. He probably had a DUI or two himself given that he was hanging around a bar. Never got in trouble for that either.