I have been there twice. It is a beautiful place, well worth a visit.
You can get there by car, and you can get views like the ones above from (or at least very near) driveable roads.
However, Yoshino is very popular -- especially when the cherry blossoms are in bloom, as they are in your photos. Traffic, including heavy foot traffic, will be a major annoyance. Parking is also likely to be difficult, perhaps impossible without an inn reservation. You won't be able to just "step out of your car".
If possible, I'd recommend arriving at the Yoshino train station and then walking up the mountain. The roads are paved, and there is also a ropeway covering the steepest part. It is not a particularly arduous walk.