i got a dui w/ child endangerment t.c.a. 39-15-401. no one was hurt, pickup went into ditch. CPS was called I am thier grandfather and have custody. until now. Prier to leaving to go shoping I checked frig. for last min. things while 15yr. old put 4yr. old in car seat. found large tumbler of grape punch in frig. and because i was taking perschiption med. that gave me bad dry mouth I drank it and found it had vodka in it. by the time I got into the truck and started it I felt O.K.. 3mi. down road I ran into ditch. About 2hr. later I tested .24 at hosp. I am 75 and wt. 200. Any chanches of a defence?