Ever since normal cars were finally banned in around 2032 due to every national leader finally accepting that global warming due to fossil fuel use was real, there had been an urgent need to find alternatives. Even the USA finally banned petroleum engine cars though one of their former Presidents (I think his name was Ronald Tramp or something like that), on his deathbed, tweeted that the USA was succumbing to a Chinese/North Korean plot.
Anyways of course at the time there were electric cars but these simply did not provide those who really liked to rush about (e.g. Presidents, movie stars (as they were called at the times) or the idle rich (as they are still called in the 23rd Century) with the thrill of fast movement.
It was only when SCSM (super conducting – super magnet) technology was perfected and became affordable in around 2030 that essentially flying cars became real. The so-called Hovercar or Hovermodule quickly became the way to travel, finally leaving good old Mother Earth roads to cyclists. This was just as well as by this time most roads had so many cycle lanes that average car travel speed in towns was a measly 5Kmh (except in the UK where they still used Mph having finally left Europe in 2072). In fact since 2025 all new roads had been built with more bicycle lanes than car lanes. All new cars from 2025 had to have special rubberised coatings that cyclists could bounce off if they accidentally hit a car as they overtook on the inside or outside. What a relief it must have been for car drivers to leave the ground and be able to drive in relative safety.