A night to remember -- if he can.

Prosecutors promise to assist him.

Police in Brigham City claim, Trent Ellsworth was in bed with a woman, when her husband showed up.

A fight ensued -- which led to the suspect getting into his car -- wearing nothing but a T-shirt -- and then attempting to run the jealous husband over.

As police were responding, Ellsworth fled on foot -- still mostly naked.  He was arrested in a neighbor's yard.

He's now expected to face attempted homicide and DUI charges.

The husband was not seriously injured.