Dropdown with two columns

I currently have a dropdown with two categories that I currently show like this: enter image description here

My issue is that I have quite a lot of Cars and Motorcycle and I`m thinking that using the version below would benefit the user. But I am not sure if it is viable from a UX point of view.

But I am curios if this version would work. Basically the dropdown having two columns that are scrollable. enter image description here