An east Houston man who fell to the roadway while trying to "car surf" has died, almost a week after the accident, authorities said.

Eric Rodriguez, 18, suffered critical injuries on Aug. 19 in the 3500 block of the East Sam Houston Parkway service road, Harris County sheriff's deputies said.

He died Saturday at Memorial Hermann Hospital.

Rodriguez was riding in a GMC Jimmy when he climbed out the front passenger window about 2:20 a.m. and tried to ride on top of the northbound vehicle, investigators said.

He was trying to climb back into the vehicle when he fell to the pavement, deputies were told.