Hello Warrior Forum - I need your help

Im new to this forum looking for some inspiration.

I just got a new Client. Hes from Switzerland and selling High Quality Car Care / Cleaning Products.
So i now got the job of testing the american market for him.

We agreed upon setting up an online Shop (Other name than Client) but as *official distributor of his products in the united states.

His products get bought by

Private Customers
- Mainly for Car Cleaning (Mostly Tuning fans, Race Enthusiasts and generally clients with rather expensive cars.)

Commercial Customers
- Companies that have Fleets
- Train / Transport industrie
- Car Mechanics / Also bigger Chains.
- Detailers

Now we just starting preparing the website/landingpage/online-shop to test B2C (shipping directly from switzerland)
In a next step we will design the website to target private customers aswell as attracting commercial customers which would buy products in containers.

Another process allready planed is adding his products on all plattforms like (wallmart/ebay/amazon/google shopping/alibaba etc)

Allright so much about the status quo.

I really dont have a lot of experience with the american market. Thats why i registered to this forum. =)

Now im really hoping to get some input/inspiration on this project. Best practices on how to target private customers in this niche.
Plattforms you should be on with your products in this niche. Campaigns you allready ran successfull. etc etc.

Thank you guys a lot in advance. Im really looking forward reading your feedbacks.

Greets from switzerland.

Tomy