Are there no experts that sell trucks?

I'm really surprised at how many of you feel that it is acceptable to not know about the products you sell. This is your job take a couple of days and learn about the vehicles you sell if you can't learn the numbers on the 20 products you sell you are stupid or lazy. I'm not expecting anyone to be perfect but if I can learn it in an afternoon so can you. Nobody expects you to know the exact payload of every truck on the lot but you dang well should be able to give me the range in the book. I've worked with sales guys for metal tooling and they can give you the specs from the book on 1000's of products off the top of their head, and the odd time they can't on new product they have the materials and will get you an answer now. I guess we are turning into a walmart society where nobody has to know anything except where to pick up their minimum wage paycheck.