Outdated Wentward Pack 2.0

This update adds Wentward DT35L bus. It is a short wheelbase version of the base DT40L bus.

This update also fixes some of the issues with the DT45L including wrong driveshaft, and really weak rear steering (now it is slightly more durable).
I've also added new T420 turbocharger, retuned the 6-speed transmission as well as made some small visual changes like adding one more passenger information panel, as well as one more side display.

Just fixed broken speedo.