Judging by those two videos, white man Charlie Clark plays all the ethnic characters himself. In each case, he demands a Sentra from a "Typical Dealership" for $9,999. Apparently Charlie Clark offers that price and other dealers don't.
Of course, the point is how people are (mis)using Johnny Depp's stereotypical portrayal. Thanks, Johnny, for mainstreaming racist caricatures of Indians!
Proving this isn't some one-time fluke, below is an image from this year's San Diego Comic-Con. As I've said before, Depp's Tonto may be the most common "Indian" image we see for the next few years.
For more on Johnny Depp and Tonto, see Skyhawk: Depp Dishonored Indians and Shawnee Professor Justifies Tonto's Stereotypes.