I don't have insight to the testing process, but ya, I assume they drove one around before buying 6 of them... It's like the difference between using the trial

I don't have insight to the testing process, but ya, I assume they drove one around before buying 6 of them... It's like the difference between using the trial period for some new SaaS product, vs. actually buying it and putting it into limited production - you'll find all sorts of things you didn't run into before. You must also consider the scale they operate at - buying 6 for testing probably isn't too big of a deal if they don't work out long term.