Thinking about selling my car

There is NO shortage of pine timer/lumber/mills right her in SE Texas. There has been a huge increase in demand for lumber ever sine the Covid deal sent people home and the homeowner has been looking for projects to do to keep busy as we all know.
The trucking industry has been hit with Covid (them claim) and now rising fuel costs. Then there is MORE profit to be made b the retailer because of huge demand.
I have been wanting to get up a roof and conctrete here for couple years now. Saving pennies, just to now find it takes dollars!!! ha I will probably build it it of used oil stem and Mexican discounted C's and tin! So where do I find affordable concrete in an area that has NO gravel!???? Ha again!