The car is said to have "7 series grade legroom with 5 series-beating agility", so estimated dimensions are a 114 inch wheelbase, 195 inches of length, and about 74.6 inches wide.
The RLX offers a lot more passenger room in the front and the back compared to the past generations of TLs and the previous generation RL. I feel everyone in the car now has their own space!
The RLX in Sport Hybrid form is an excellent value in the used car market. You can get $15,000 to $25,000 off +18 RLX sport hybrids that will be more reliable than similarly priced BMWs, MBs, Jag, or Audi for +100,000 miles.