Specifics
The Panzerwerfer 42 auf Maultier weighed 7.1 tonnes, was six meters long, two meters wide, and nearly three meters high. It was capable of reaching speeds of up to 40 km/h. One of these half tracked vehicles generally carried a Nebelwerfer 42 launching system, which was specially designed to be mounted on the Opel-engine powered Panzerwerfer. The German engineers designed this system because of the conspicuous trails of smoke left behind by the Nebelwerfer batteries, which necessitated a self-propelled artillery piece. The system contained 10 missile tubes, and generally carried 20 projectiles, enough for the vehicle to fire two full salvos.
Read more about this topic: Panzerwerfer