Unser was arrested at 3 a.m. and charged with reckless driving and aggravated driving while intoxicated .
Unser plead no contest to a DUI charge in a 2007 Nevada crash .
Unser , who plead no contest to a DUI charge in a 2007 Nevada crash , was arrested at 3 a.m. and charged with reckless driving and aggravated driving while intoxicated .