Shares of this drive-thru coffee concept may be too hot to handle. Dutch Bros (BROS -0.81%) is serving up impressive growth with accelerating profitability. Shares of the drive- thru coffee shop operator and franchiser are up more than 20% so far in 2024. There's a lot to like about this innovative quick-service beverage concept still in the early stages of a national expansion strategy. At the same time, a pricey valuation warrants some caution and could be one reason for investors to avoid chasing this ca ...