I park on crushed gravel behind my house, so some jobs are hard to do there. I have used the employee parking lot of a nearby post office to rotate tires and change shocks--on Sunday or after hours. I saw an S-10 in that lot with the bed tipped up for about a week. Somebody must have been changing their fuel pump.
During college, I did oil changes in a campus parking lot. Some work is OK curbside as long as the street isn't busy. I changed a starter that way, but this was on a slant-six Mopar where the starter is accessible from the top. (I got a lot of practice with an Autozone "lifetime warranty" starter. I changed one in a few minutes outside the store.)
A job that can't be finished right away would be a bit more complicated, since you would need a place you could leave the car but still get to it easily.
During college, I did oil changes in a campus parking lot. Some work is OK curbside as long as the street isn't busy. I changed a starter that way, but this was on a slant-six Mopar where the starter is accessible from the top. (I got a lot of practice with an Autozone "lifetime warranty" starter. I changed one in a few minutes outside the store.)
A job that can't be finished right away would be a bit more complicated, since you would need a place you could leave the car but still get to it easily.