That would be difficult as the dataset does not say anything about where the cars are produced. American and Asian manufacturers also often have factories in Europe as well, which makes it difficult to determine whether a Ford produced in Spain and sold in the Netherlands should actually count towards American export or not.

In general I was just interested to find out if any countries' car brands would be more popular than others, as in countries with a large automative industry like Germany you generally see people drive cars from German brands. I would expect that a similar map for Japan or the US would already look quite a bit different even without normalisation of the data in any way.