Issaquah's Triple XXX Rootbeer Drive-In announced its closure just hours before ending operations for good on Nov. 29. The drive-in, located at 98 NE Gilman Boulevard, sold for $1.4 million on Nov. 20. A sign on the door announced the beloved spot would close on Wednesday. "We thank you for the many happy years of serving you," the sign, posted by management, reads. "We have retired!!!" XXX Root Beer Drive-In opened in 1968, according to the restaurant's website. The drive-in is known for its comically large portions of 1950s-style diner favorites, including giant XXX burgers, "Why did the chicken cross I-90?" entrees and, of course, root beer floats and milkshakes. READ MORE: https://www.king5.com/article/news/local/triple-xxx-root-beer-drive-in-closes-after-55-years/281-529554c8-5c8c-4b85-9600-2863fd3030c0