PHILADELPHIA - Philadelphia police were taken on a wild chase across the city by a U-Haul reaching speeds of 90 mph, and only ending because its gas tank finally hit empty.From South Philadelphia to Center City and eventually Germantown, several officers joined in the effort to stop the driver of U-Hail van early Wednesday morning.The chase went through more than 50 streets across Philadelphia, and came to an end on Newhall Street when police say the van ran out of gas.MORE HEADLINES:Four people have been taken into custody in connection to the chase; two adult men, a woman and a juvenile.A police radio was found inside the U-Haul, which police say had its decals removed, and license plate replaced.Law enforcement sources told FOX 29's Steve Keeley that the suspects were wanted in connection to a robbery turned shooting at a South Philadelphia 7-Eleven earlier this week.This is a developing story.