I'd argue that driving drunk at 55 mph in a 25 mph zone goes way beyond carelessness.
I fully agree that it was criminal carelessness but I don’t think it helped that the mom was double-parked after dark.
It is way beyond simple carelessness. Damn, now I’m fluctuating between amputating the guys leg and deporting him, and an on-site trial and execution. On the one hand the execution would feel REAL good and he’d never come back. On the other hand HE gets to feel the pain (no anesthetic) and has to live the rest of his life without legs. I’d probably swing towards the amputation in this case for 2 reasons - it was not deliberate, premeditated actions on his part, and because they were double parked.