Employing a novel test structure, electron velocity overshoot in silicon inversion layers is observed at room temperature. For channel lengths longer than 0.3 mum, the velocity/field relation follows the well-known behavior with no channel length dependence. The first indication of velocity overshoot is seen at channel length of 0.22 mum, while at L = 0.12 mum drift velocities up to 35% larger than the long channel value are measured.