If Bitcoin is not being fight against in your region and there are more people that knows about Bitcoin in your region, you will surely have rich guy customers that will pay with
 Bitcoin to get their car fixed. Customers love to get discount and from the discount you have agreed to offer the people that will pay in Bitcoin, you will surely have them coming. Some people that are not even familiar with Bitcoin will buy Bitcoin so that they can pay you with it for the sake of the 5% discount. Keep it up @OP, kudos.