If you're not even using a map, the exact distances are all very fuzzy anyway. Inherently hand-wavey. I suspect that's not what you're talking about tho.
If you're playing SR6 with a gridded battlemap where you measure exact distances, then drones are going to have to be sticking more or less to pedestrian-like speeds in order to not fly off said battlemap (10 meters per move action). A samurai can move up to 10 meters per round, round after round, irrespective of what their "speed" was last round. The only variation is whether or not they throw in some sprinting, which again doesn't remember past rounds' movement rates.
If you have a fire support drone along, it's probably by necessity going to be sticking to similar speeds. Whereas the samurai can't just add speed round by round (they either move up to 10/15 or they don't) the drones are able to vary how many meters they get on a move action. Accel isn't a hard limit on how much speed can be gained or bled in a round, it's the
safe limit. Even then, drones like the Samurai have an Accel of 10: they can go from a dead stop to Street Sam's move speed just right there as is... and unlike the Street Sam they can keep accumulating more and more... there's no "falling behind". And again you can gain or lose however much you care to try: the GM throws a handling test at you with an arbitrary threshold (this topic again

) based on what the exact circumstances are.
TL;DR: I'm not defending the vehicle rules as being ideal... but I think they're certainly playable at the pedestrian scale. And, once you have the chase rules, you can just ditch all that gaussian mathematics when it's vehicle vs vehicle combat scale.