-freeintcam This line added to the trainzoptions file will allow any loco/drivable vehicle cab view/roaming ability using the KB arrow keys.
MWM MonkeyWrenchModels has several drivable pedestrians, signalman, and lantern, which have a cab view.
Laying invisatrack parallel to your mainline track will enable a pedestrian vehicle unobstructed view and driving/camera operation.
The Jet Sled is my favorite high speed track inspection vehicle, goes 687 mph !
The Drivable Tent is the most comical driving vehcle, also the Hanglider.
There are several drivable pedestrians, and lead pedestrians, that have a coyote/roadrunner cartoon horn that goes "Meeep Meeep" ! :hehe: