Backup truck, just in case.

As long as you don't mind paying for the plates, 2290, IFTA and advalorum tax. Also at least liability insurance would have to be kept to keep tags current. I think you can add and drop it for cargo insurance at will. Also don't forget all the maintenance records in case of audit. I could see this being feasible if you had several trucks but don't know if it would be worth it for one unless yours stays broken down constantly in which I would sell the one breaking down all of the time.
If you have something dedicated that the load has to move you could consider a rental like Ryder. I have never done this but heard of it being done.
Otherwise I would just use the time for getting all of your honey do's done or just go fishing.

 

Also need to keep the SAFETY inspections up to date as well as keeping it in touch the key and it fires up ready to hit the road condition. And if your leased to anyone you need to let them know about having 2 trucks and make sure the 2nd truck ( REPLACEMENT ) is acceptable to them.

 

take and put the money in the bank and use it to repair or replace ,why spend money on equipment that is going to sit most of the time and go down in value

 

Sell the '09 Prostar and use the proceeds to buy two identical trucks.

 

Rank has a smart idea. Two identical trucks, one is the truck that gets used and the other is for parts. If it makes sense budget wise then do it. But before anything calculate the cost for a year or two and decide is it better to take all that money and put it in the bank for repairs or a buy a spare truck.
Another option is to calculate the estimate for the other truck, take that money and put it in a separate back account, sell the prostar in a year and buy a better truck or new/newer one.

 

To address your question. It doesn't cost much at all to have a spare sit at home, just in case. You can add a truck to your IRP at any time. Just fax or email the paperwork . Maintenance records everyone keeps for taxes. I have done this for years. My spare truck I used off road weekly, so I did use it to make sure everything was working.
I only "needed" to use it a couple times in 5 years. I was lucky my main truck broke close to home. If I was 1000 miles away it would not have been worth getting home to get truck and drive back and forth a couple times.

 

Thanks Cat but not exactly what I was getting at

 

I like having two same trucks , learning curve and or spare parts