Budget lens for auto shots?

I'm looking at picking up a lens to use to take shots at car shows and other automotive events. The final shots would range from wide shots showing the full car at a 1/4 view to narrow shots focusing on paintwork/details with bokeh in the background.

The budget I'm setting for myself is $500.

The lenses I've looked at are:

1. Sigma 18-250 Macro OS f/3.5-6.3
2. Canon EF-S 17-85 ISf/4-5.6
3. Canon EF-S 18-135 IS STM f/3.5-5.6

I'm leaning towards the Sigma because I can use it in more situations than the others. I'm looking at the 17-85 because it has the sharpest focus of the three. And the 18-135 is a compromise between the other two.

Does anyone have any experience with these lenses to offer any advice on which they think would be the best solution?