I'm guessing it will be the same formula that we see with all these programmes. A business struggling because the owner has lost interest, won't let younger family members push it forward or just hasn't embraced new technology.
The answer will be freshen up the site/showroom, a family arguement, a change of advertising involving a new website or an vast improvement on the one they have, another arguement, getting everyone smartly dressed and to stop smoking in the sales office, walking around the local town with flyers and various sales aids (this part is always undertaken by the shyest or less confident member of the business to add cringe factor). The end result is more sales.
I very much doubt they will chose a business that is struggling because the cars are such a poor standard and their attitude to after sales is as criminal and the people who run the business.