The coveralls weren't issued to tank company and battalion HQ personel (exceptions would the tank company and battalion commanders, who commanded their own tanks, and THEIR crewmen), only to tank crewmen... Basically, if you didn't live and fight in a tank, you didn't get issued coveralls, just the regular wool combat uniform...
There are two jeeps assigned to a WW2 Tank Company HQs. One for the commander and his radioman, and one for Maintence...
The HQs recon platoon has five jeeps, but again, unless they were tankers, they didn't get the tanker coveralls... Just the standard wool combat uniforms.
Also, the weapons (except pistols) used by tankers weren't actually assigned to them, but were part of the tank's equipment and ammo load-out, usually two or three M-3s or Thompsons per tank....
Same thing pretty much applies today... If you aren't an AFV crewman, you don't get issued the CVC uniform, just is it is in aviation companies.. No flight-status, no flight-suits...
So unless you're modeling "bailed-out" tankers, or tankers that have stolen a jeep, you'd need your figures to be in the regular uniforms if you want accuracy...
Personally, I don't care.. I don't use 1/35th figures straight outta the box anyway (with the exception of some drivers and/or pilots), so whether it be Dragon, Tamiya, ICM, or whatever else is out there doesn't matter, since I "Frankenstein" about 99% of my figures using whatever fist, hand, head, torso, leg, or boot I need to make the pose, and add or remove collars, belts, waistbands, cuffs as needed...
I buy figure sets like folks would buy strip or sheet styrene... They're all just parts, regardless of box-pose... I open the box, cut all the stuff loose, and organize them by body-part and uniform in the parts-bin.. It's not uncommon for me to have a single figure made up of six or seven different manufacturer's parts...
That way nobody recognizes them, the poses are mine, and generally more dynamic... I don't have to make the story fit the figures, either...