More importantly, can Riggers use hot-sim VR at all (unless they form a persona on a commlink illegally modded for hot-sim or a cyberdeck)?
Can't actually find anything about the rigger sim-module (which is located in their Control Rig headware augmentation, not their RCC) already being modded for hot-sim (or if it can be modded for hot-sim post installment).
Still a week away from my books but if I recall correctly all vehicle actions count as matrix actions unless you use manual operation; Limited to the normal limit or data processing (whichever is lowest), +2 dice from hot-sim VR, affected by noise-, cross grid- and public grid- modifiers etc...