We don't have any official Gavrils under that names, and gabester said earlier that is forbidden to convert RoR Gavrils into Beam. If you want to use that nomenclature, go ahead, but I won't because it's IMO completely unrealistic.
Which means it's not because he totally abandoned them from the universe, they just aren't modelled well enough. --- Post updated --- M85 (1951-1991): It is a... ...50s 6x6 US Army truck. Based on the M35 "Deuce and a half" truck, but with a Dodge M37 front end. Body-on-frame, front longitudinal engine, leaf spring suspension, drum brakes. Not too fast, but torquey and good off-road. Available in 4 versions: M85 (1951-58) - Equipped with a 118 HP 9.0 I6 multifuel engine, 4-spd manual, 2-range 6WD, locking diffs, standard suspension, basic brake pads, 20x12 steelies with 45x12.5-20 offroad bias-ply tires and a snorkel. M85A (1958-70) - As above, but with a 133 HP 7.8 turbo engine, premium brake pads and 45x13-20 tires. M85A2 (1970-84) - As above, but with 7 HP more, 5-speed gearbox, uprated suspension and brakes and 20x13 steelies with 45x13.5-20 radials. M85A3 (1984-91) - As above, but with a 7.0 139 HP turbo engine, uprated suspension and 45x14-20 radials. Comes in a variety of configurations. It can have a convertible top or a hardtop and be a semi truck, flatbed, pickup (with optional canvas top), shop truck, tanker, dump truck, tow truck, crane, shop truck (possible RV conversion), fire truck, flak cannon truck or 4x.50 cal. gun truck, and comes in a variety of camouflages.
Hirochi ??? (1965-1969) It is a... 60s Japanese first-model sub-compact sedan/coupe. Based off the first gen Corolla, but with a similar rear and wheels to the Subaru 1000.
It can as well be an early Sunburst. But the first car (Inlustris is still a stupid name for it) is either a Miramar, a midsize (compact by US standards) Hirochi, an older Covet/Sunburst sedan or an inbetweener car like the real Carina or Violet.
Hirochi Sunburst (2001-2009) It is a... 2000s compact sedan/wagon. Based off the Subaru Impreza, but with a similar front to the Legacy. Misc. This is the last predecessor to the in-game Sunburst.
Since there's buses now in BeamNG.drive, maybe adding a 2nd, older bus, like the GM New Look. Spoiler: PICTURE And, maybe have an ad on it for WCTA (West Coast Transit Authority)? Just a thought! And, you could call it name it after my profile! If you would, you could replace the default GM at the front of the bus with WW, for Wentward! Hope you like my suggestion!