Magus had gotten himself mostly onto the roof of the van when he felt something wrap around his right arm.  He looked and saw a tendril of glass begin to encircle his arm.  Magus wrenched his arm against the glass, but his strength alone wouldn't break the hold--it would merely delay the glass making its way fully around his arm and doing whatever else it was supposed to do.  He took his staff back into his left hand and swung at the glass just below his arm while he wrenched upward.  The glass splintered at the point of contact, and with another yank of the arm, he was able to break free, though it seemed he would be wearing an interesting bangle on his forearm for a while.  He was now in a stable position on the roof of the vehicle once more, and so he chose to enact what he hoped would be a game ender for this chase.  He took his staff in his right hand and lowered the end to the asphalt behind the car, the quartz rod trailing behind the car.  Magus channeled his earth power through the staff and into the pavement, and the soil and rock below, focusing on what he wanted to happen.  Suddenly, just feet in front of the car, the street exploded.  A pillar of earth and rock shot upward from directly in front of the van, creating an impenetrable barrier, and the van was going too fast to avoid it.
Magus jumped backward off the van, stumbling, but rolling neatly to his feet just as the van collided with the solid wall in front of it.  He stood in a ready stance, his staff held across his chest in both hands as he waited for the villains to make their next move.

[@Flamelord]