Lotus
You put flowers on your car and your scooter. The flowers you put on them are lotus flowers.
Imagine placing lotuses on top of your scooter and car. They are the right kind of flowers for these vehicles.
れん
はす, はちす
None
You're putting a lotus on both your scooter and car because they are rentals (れん).
You always put a lotus on top of your rental cars and scooters. It just makes those boring, ugly rental cars and scooters so much prettier!