The plastic trucks that are found on the MPC cars appear to be of a European design and don't appear to even come close to US AAR standards. Of course, I stand corrected. I agree that the cars have beautiful graphics as well as sharp lettering.
Item: These cars should never be purchased as a financial investment if anyone intends selling them at a later date and expects to make anything close to a windfall profit. I imagine there are a few that might possibly be considered rare in 2020 that demand a higher price. Attention MPC experts: Please fill in the blanks!
To quote the onetime slogan that appeared on the cover of Model Railroader magazine: Model Railroading is Fun! The MPC era cars certainly fall into this category.