Wholesale

How do I expand my business and actually thrive in the business of automotive wholesaling?

I have started wholesaling vehicles locally and I want to expand. I have considered a couple of options. I can export trucks and SUVs into the USA from Canada as there is a new opportunity with the Canadian dollar hitting all time lows. I can also expand within Canada and keep selling cars and trucks. I am new in this business, I started less than 6 months ago. I have been cash flow positive so far, however I am not growing at the rate I expected and I'm not sure what's missing. It's a very niche market as far as I know and there's a lot of old players.