You have to stop thinking like some guy from Mad Men and more like somebody buying AWS instances.
Imagine that instead of buying a single car that you drive everywhere you instead reserve a car for your daily commute, you might get various options, eg:
$500/month - Tesla Sports car, 30min journey, unshared occupancy
$300/month - 2 seat Google-Car, 30min journey, unshared
$125/month - 8 seat van, 40min journey, shared, up to 1 vehicle change
Now if you are a go-getter gunning for VP you'll pick the sports car. But others might not see the extra expense as being worth it.