The problem with a solar charger like this is with current solar technology, you need a really huge solar array to generate enough electricity to be useful. 170mA is not even a quarter of an amp. Just ONE of the bulbs that illuminates your dashboard draws more current than that. Your trunk light if you have one likely uses 5X that amount. So it will help keep the battery charged, in much the same way as a leaky faucet will eventually fill a bathtub, but very slowly at best.
You should be able to use this device on any car with a 12V negative ground electrical system.