Thirty-six-year-old Michael Galloway of McKinney was in the Dallas County Jail on Tuesday on bonds totaling $10,000.
The car was parked illegally.
Police say the windows were up and the doors were locked.
According to police, Galloway said he was inside for 20 minutes.
Witnesses told police he was drinking inside for at least an hour.
A woman who answered the phone at Galloway's residence declined to comment or provide the name of his attorney.