They really need to put the celebrity back to their own short discreet section. This format might work ok if there is an interesting guest but 90% of the time it will just be awkward. Most celebrities aren't interested enough in cars for it to work.
Looks like this is the brand:
Edit: And this was their website:
It's because there is the imperial system, partially still used in Britain and related countries, and the American system which has the same units but with different values. For example a US pint is 16 fluid ounces whereas an imperial pint is 20 fluid ounces. They both have 8 pints to a gallon...