What's that job pay?
I'm just guessing but it's probably fairly decent. There are only so many people in the world who look like POTUS and have nothing else to do.
I live in the DC area and have seen how this works twice now. Obama does various speaking engagements locally sometimes, and both times I saw his departure from the building from the street. Three identical cars peel out from the building loading dock and drive somewhat erratically away, accelerating hard.
This probably has nothing to do with Obama personally, every government agency wants to look like it is doing Very Important Work and the Secret Service is no different in that respect.