Why do steering wheel locks seem so much less popular now? Same with the reflectors. Nothing's changed about the best way to keep the car cool while you're not in it but I almost never see them anymore and I'm in Australia of all places. Those things and to a lesser extent the steering wheel locks were everywhere in the 90s.
Because engine immobilisers are a thing, that's also why car keys are so expensive. The engine won't start without the correct key so no need to worry about the wheel.
As for reflectors, the people that use them might just opt for ceramic window tints.
Wait... I was born after the 90s and got my first Car a year ago. It still has a Detachable Radio, No Automatic Windows and also ... is the last pic a trick against heat if you have no AC? Because I also have no AC and I always fucking die when I enter my Car after Work when the sun was blasting on it for some time. Are you telling me that I can just place that thing that is normally against ice in Winter in there and my Car stops overheating? I must be misunderstanding. This cant be so easy right?
Man, I remember back when custom stereos were really popular. Almost everyone had some sort of variation of the detachable face stereos in their car.
Also, you forgot to add manually having to lock all the doors.