Ethan Coen’s road-trip comedy “Drive-Away Dolls” does not have that cinematic new-car smell. No, the stale scent is closer to months-old, unfinished McDonalds Happy Meals and inexplicably maroon stains. The creaky vehicle has racked up so many miles, it barely starts. So tired and unappetizing, this dreadful film is. The front seats are occupied by Marian (Geraldine Viswanathan) and Jamie (Margaret Qualley), two lesbian best friends who embark on a “drive-away” being paid to move an automobile from one city to another for some adventure and personal reinvention.