On march 26th 2016, at 2:31pm, i sat in the vehicle, turned the vehicle on and put it in the drive gear. while my foot was still on the brake, the vehicle started to roll forward. i immediately checked whether the gear was in fact in the drive mode, and both the dashboard and gear box symbols confirmed. i tried to step on the breaks, but the breaks seemed to already be depressed all the way down and locked in that position. i had no control over braking capabilities. after seeing that i had no control over its rolling motion, i quickly depressed the emergency brake. the vehicle finally came to a complete stop. then i turned the vehicle ignition off. i was prompted to put the vehicle in park mode. i shifted the gear to park and attempted to restart the vehicle. while trying to restart it, the vehicle's break was still completely depressed, although i tried to depress it further with my foot and snap it back to its original position. after a couple of attempts of continuing this action, the brakes finally seemed to unlock and released back into its original position. i had regained control over the braking capabilities of the vehicle. next, i released the emergency break and put the vehicle in the drive gear once again. i was able to drive the vehicle appropriately thereafter.