Could we see those states bundles in some way?
I think SCS eventually will not have a choice, or else the list of expansion packs will be almost as long as the list of ETS2’s paintjob DLC’s

.
I would love to see names such as
Road to Great Lakes or
Meet the Mimal 
.
What about the trucks themselves?
Well, I am not an American, but can I answer?
The first really striking difference between
ETS and
ATS trucks is the price for accessories!

It’s funny to see how the most expensive
engine for DAF 106 costs 22,2k Euros, and the most expensive
set of sideskirts for it — 23,2k

. In ATS only the high-end engines are expensive; the cabs, interiors and accessories don’t have so wide price range. So, there is
1:0 in favor of ATS.
Next, since in ETS the set with biggest fuel tanks is the cheapest, in ATS — the most expensive, taking quick jobs with basic truck is easier in Europe — you don’t need to worry that your 150-gallon tank can dry out at 50 miles from the next truck stop (and you, of course, didn’t refuel on a previous station because there was a very curvy exit to it). And that 10-speed gearbox they like to give with basic ATS trucks also gives some butthurt on long climbs with a heavy load.
1:1Differences in truck behaviour: for me, all of them have some good and bad sides: yes, the longer American chassis is more stable (at least, I can feel it), but my manual geek’s taste have found the bright side in European trucks: while the vehicles with roughly the same weight and power have a similar acceleration, the European engines are better on the start — a truck literally jumps forward when you release the clutch pedal, and American engine is easier to stall when you are starting on the climb. Difference in chassis length can be critical for the parking, but I think that skill have more weight in this case.
2:2Gearboxes: despite that 10-speed basic one, the medal still comes to USA, their 13- and 18-speed EF’s have more gears in the range of 75-125 km/h. European 16-speed ZF could be equally good, but it is not available for Volvo and Scania and have too low diff gear ratio, especially in Mercedes.
3:2Trailers: As long I love the ability to make the trailer’s wheels the same as on your truck in ATS, the heavy cargo trailers from ETS are much easier to handle (even if sometimes their smart axles are too smart

) than their American counterparts, and, in addition, B-doubles are much more useful in ETS. But, the ATS’s map in its current shape have much larger percentage of long trailer-friendly areas, so both games take their points here.
4:3Badass look: I think, no further explanation is needed here

.
5:3Tuning options: ETS wins by a landslide, even if those accessories can be ridiculously expensive.
5:4Diversity: well, if IRL is better (for a service man, not for a manufacturer

) when the same part is compatible with all trucks, in the game I more like when the vehicles are different not only in appearance. And here ETS takes the lead: not only it have bigger variety of models (with unique engines for all manufacturers!), but every truck can also have different number of axles — the option you can’t get in ATS without using mods.
5:5So, it’s a tie

. The choice is really tough, and both sides have their pros and cons, although some new features like emergency refueling can lower the importance of visiting the truck stops at the right time, and increasing number of ATS’s trucks makes the traffic more diverse. Also, when someone likes badass trucks, another people can love cute ones, and European game have a plenty of them.