The Mojo and the Sayso which opened at ACT last night is four actors and a car, but the car is the thing, the main entity. The car is the set, the stage, and the focal character. It may not have any lines, but it stands in for everything that moves playwright Aisha Rahman's story forward. It's the absent child, gunned down by aggro off-duty cops, it's the broken family, being rebuilt from the ground......