substitute

If you thought being a driver trainer on the streets was scary, consider this:

The driver training tank is essentially a regular Leopard 2 MBT with its turret replaced by a special observation cabin, with a dummy gun and extra weight to simulate that of an MBT turret.The instructor, with appropriate devices to override the trainee driver seated in the hull, sits in the front seat of the observation cabin. Two additional seats in the "glasshouse" provide space for pupils to observe.