Although I am not an Apple product user or fan.... I will admit Apple has customer service and sales nailed down with the way they run the istores.
Was thoroughly impressed with a recent visit to have my daughter's iPhone repaired.
The store was fast, efficient and most important.... Knowledgeable!
Car dealers should take note, especially the Sales departments.
Bottom line is that Sales jobs seem to be higher in turnover rate, especially referencing car dealers.
With this, it is hard for a Salesman to know a vehicle inside and out and many models at that.