I'd personally love if manufacturers actually offered upgrades on their older cars. I had an older Mercedes-Benz and I would've absolutely given Mercedes-Benz money if they had a first-party CarPlay solution for my then car.
No, they're saying they would pay for new software. Many ~10 year old cars have all the hardware necessary to support things like CarPlay, but because CarPlay didn't exist yet they do not have it. A lot of people would probably happily pay $200 to add it to their car without having to shoehorn in a third party head unit.
Not really. CarPlay didn't exist when the car was made. The car manufacturer had to add software integration even if the hardware was already competent. Parent comment is saying they'd pay to receive this added integration.
do you want to buy the headlights DLC ($0.9 first month, then $29.9)? Y/n