Would it be feasible for some Freight Trains to add on a few passenger cars in the right situation?

[Quixote1818]

Here is one scenario where doing this might have some benefit. I live in Albuquerque and we have no railroad passenger service between Albuquerque and El Paso, Texas. It's probably not feasible for Amtrak to add service there or they would have done it but every day trains run from El Paso through Las Cruces up to Albuquerque and of course they also run from Alb. to El Paso. I am not one to ride the bus but if there was a train down to El Paso I would love to take it. I suppose it would hurt Greyhound and might be small potatoes for the Freight Train companies but what would be the harm of throwing on one or two cars with passengers? I understand the schedules would probably be erratic but people could just log on to the net and see if there is a train that might meet there schedule.

Thoughts?