So, what's new in LumenRT Update 5? Here are the new features released with this updates with some video examples.
It looks that you need to add drivers option to Lumen cars...
Nah, no drivers needed. Those are self driving Ubers.
There are, actually, several cars in LumenRT with drivers - when on Vehicles selection dialog, go to very last tab, which is called as what it means - Drivers.