Thanks GV80AL, guess we have some further thinking to do. Interesting that with our current 2009 Lexus RX350 we have no problems doing these type of trips especially when my wife and I , with second row down and total cargo area filled, do the mountain passes on our way to California each winter; however the Lexus does have the 3.6litre but less hp and torque. Could go back to the 2021 Lexus, however not a fan of the styling, particularly the grill......however, do love the Lexus comfort, performance and reliability. Anyway, got to think if the extra $10,000 for the 3.5L model is worth it, not a fan of 22" wheels for drive comfort and occasional off road type travel.....Thanks again.
--JP