A friend was pulled over for going right at the stop sign and went to the outside lane instead of the inner lane. He pulled over into a random persons driveway due to it being the only open spot on the street. When approached by the officers he was asked for info. He provided that and it came back that he had a warrant out of another county. He was arrested and then asked if they could search the vehicle. When he refused they brought the canine unit in and said they hit on something. However, when he got out of the vehicle the door got locked but the keys were on the top of the car. Can they legally search the vehicle at this point and if so what was the probable cause for the search. He had no prior convictions and did not in any way resist during the arrest.