NEWBURG, Ore. — To say that the midsized Toyota Camry sedan is a massively popular car would be a gross understatement. After all, it’s been America’s best-selling passenger vehicle for 18 of the past 20 years, and 18 million have been sold around the world since it was first introduced in 1982. Toyota sold over 388,000 Camry’s last year, but that’s down from more than 430,000 in 2015. Through May of this year, sales are down some 20,000 units over last year. Still, Camry is a popular vehicle and a solid bet to sell more than 300,000 by year end.