A house on our neighborhood has "cement slabs" (~3x3?) alongside both
sides of driveway to widen it by 6 feet.

Another house used bricks (or so it appears) to effectively do the same
thing.

What products are used to do this? Where can they be purchased and for
how much? How long will they last, and can it support weight of a
pickup truck each night?

We have two cars, and the ridgeline doesn't quite fit in the garage,
and it's a pain to back out the car from the garage around the
ridgeline (truck).

thank you