Is there a base to adapt the car seat in the car?
(From original French: Bonjour y a t’il une base pour adapter le cosi dans la voiture?)
I will disappoint you but no, there isn't. The Asalvo Convertible Riso only offers a 3in1 solution with a non-ADAC-tested car seat capsule that only can be secured with a car's safety belt during the car rise. It's a simple solution for a low price, so this option is, unfortunately, not offered.
You can always go for a better car seat and use it only in the car if unsure. Not everybody uses their pram as a travel system.