Why Saudi Arabia Is Building a Linear City

I live in a linear city called Cluj-Napoca from Romania. The city constantly gets congested by cars and the mayor is trying to build new ways to circulate through it like public transport, bicycle, electrical scooters, metro etc. But the problem is that guys will still buy a car  because they want to have sex with girls from tinder or travel outside the city so i guess people will do the same in the linear city.