@GermanStar
Like the other G, "Garmin givith and Garmin taketh away". However, that's not novel behavior by Garmin (also other manufacturers), very often they do things such as remove features and the firmware changelog doesn't reflect the changes accurately, like they just put 'Minor bug fixes'. Often there are good reasons for doing it because a device proves problematical in everyday use and/or for them it's the easiest way to sort it 'cos they've already got your money, right?

In this case I believe you're correct and they are nobbling devices very much on purpose. Other recent nuvi series and Drive line seem to be affected too. They may well extend to fw 'upgrades' for other devices recently superceded automotive ranges too, but probably not really old lines like 2 series and 1xxx because there's little point if my theory is right. That theory is they want ppl to buy an outdoor device for such activities and use their auto device for usual routing ... but who knows for the moment, maybe their software guys are just cocking up badly? Time will tell though.