If you go dedicated Vehicle Rigger, definitely get an Alphaware (or better if your GM allows) Rating 1 Control Rig; especially if you do aircraft (or submersibles, which are incredibly rare) since margin for error in piloting either of those is much worse than ground vehicles.
Why Rating 1? Because there's Geneware and Nano-ware that boosts their effectiveness far more cost-effectively than higher grades of control rigs (in nuyen or essence).
And it is most definitely worth the investment, simply because a Control Rig increases the limit on
everything the vehicle can do while a pilot is rigged in.
Shadowrun 5th Edition Core Rulebook, pg 266.
When you’re jumped into a vehicle, drone, or other device,
the limits of that device are increased by the rating
of your control rig. This includes vehicle and drone Sensor,
Speed, and Handling, and the Accuracy of mounted
weapons when used by the rigger.
This is INCREDIBLY important if you get into a chase or do vehicle combat, because if the pursuit uses a rigger pilot while you don't, barring luck or throwing big magical mojo at them (high force physical barrier, spirits) you aren't likely to win. (make sure you're good enough to use the improved limits too; because corp-sec and military pursuit units sure as hell are)
One caveat I will offer here is that...well, most GMs hate running Vehicle chase sequences, and opt to just roll abstracted Pilot and/or Gunnery tests to resolve the matter.
(the complexity of chase rules has always been a complete headache to manage)
If that's the case, what Kuirem suggests is perfectly valid. Rig-less drivers also work well in street/gang level games, since virtually no gangs could afford to outfit even their best pilots with control rigs; let alone stack rig boosts on top of that.
Otherwise, DO NOT SKIMP OUT ON THE CONTROL RIG. Barring GM foolishness or mercy, you *WILL* pay dearly for it.
I've seen entire games go to shit and the whole team get caught and/or killed PURELY because of a couple nasty rounds in vehicle combat.
Ideally, you avoid chase scenes entirely by doing the job quietly, or fleeing the scene before they figure out who hit them and what their vehicle looks like.
...Shadowun is a world of anything but "ideal". If you run long enough, you WILL eventually get into such a situation, and most of the time, it's your driver/pilot who is going to get you out of it.