Taxi Standstill

"Nonetheless, the fare in a taxi is based on distance traveled and time elapsed," replied Rabbi Dayan. "The exact job and its fare are not predetermined; they depend on the route the cab takes and traffic conditions. The only agreement is that the price should reflect the meter reading; each unit is considered a separate hiring. Thus, even though you initially asked for a trip home, you are entitled to stop anywhere that you wish." (D’var Chok U'mishpat, p. 245)