The past few months have been challenging for Tesla (TSLA +0.91%) shareholders. Shares of the electric vehicle (EV) giant are down roughly 30% from their December peak. This sharp correction has rippled across other major EV stocks as well. Rivian (RIVN +1.25%), for example, has also seen its shares lose roughly one-third of their value since late December. If you're looking to buy growth stocks with monster upside potential at a discount, this looks like your chance to add both of those automakers to your portfolio. 1. Rivian has several major growth catalysts on the way After their slump, Rivian shares look like they have growth potential. Two notable catalysts could arrive in force this year. NASDAQ: RIVN Key Data Points The first will be the launch of its R2 SUV. SUVs are one of the most popular categories of vehicles in the world today, and they've made major market share gains in recent years. More than half of U.S. auto sales are now SUVs. Rivian expects to begin deliveries of the R2 to employees this month, with external customer deliveries scheduled to ramp up over the summer. The potential here should not be discounted. Tesla's Model Y has been one of the best-selling cars in the world for several years straight, and it accounts for a majority of Tesla's auto sales. In many ways, the Model Y paved the way for Tesla to become a $1 trillion business. The Model Y has proven more popular than the Model 3 sedan despite its slightly higher price. The Model Y is a crossover, somewhat akin to an SUV form factor. SUVs and crossovers are way more popular than sedans right now, and have been for years. The Rivian R2 is expected to have a base price of around $45,000 -- roughly