The same cautions and choices should be observed for ramps. I have a set of stamped steel ramps.
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I have a set of steel ramps similar to that, except that they have a support at the top of the incline. Call it a "center leg".
They seem to be quite sturdy, and are stored inside, where they won't rust, or anything. I still look at them a little funny sometimes, though.
The problem I have with
those, is that they like to slide, on a concrete floor. I probably need to buy some rubber feet to put under the front corners.
The angle is also too steep to use with a Fiero, or even my G6. I have some wooden approach ramps that I have built, but that is still not ideal.