Also, my credit union has a similar auto buying program and a quick Google of credit union auto buying program shows it seems to be pretty common. Most of them seem to use a 3rd party company called TrueCar it looks like. Source: 11 months ago

Cars.com, autotrader.com, truecar.com, craigslist, etc. Search nationwide. Be willing to fly and drive or have the car shipped. Source: 11 months ago

Check truecar.com, cars.com and the spreadsheet to find dealers that are getting inventory of the rav4 you're looking for. Source: 11 months ago

I'd recommend checking truecar.com, cars.com and check the Inventory spreadsheet. Source: 11 months ago

Other good resources for locating cars are cars.com, and truecar.com - I think both allow you to do a 'nationwide' search. If you couple this with the spreadsheet, what you'll see is, not all Toyota dealers are equal, with some dealers getting considerably more inventory than others for certain car types. Source: 11 months ago

What about something like Pretix. I personally haven't tried it. Source: almost 2 years ago

You may want to try pretix: https://pretix.eu/about/en/, the corresponding GitHub: https://github.com/pretix/pretix . Source: over 2 years ago