The vehicle attributes section (characters 4-8) is displayed as-is. It should be converted to human-readable information, such as model, engine type and size, vehicle type, and so on, per 49 CFR 565.15 paragraph (b).
Both this and #1 will require querying the vPIC API. Vehicle attribute information is provided directly to NHTSA by manufacturers, so the NHTSA database is the best place to decode that information.
The vehicle attributes section (characters 4-8) is displayed as-is. It should be converted to human-readable information, such as model, engine type and size, vehicle type, and so on, per 49 CFR 565.15 paragraph (b).