I had to have my ParkLiner
weighed when I registered it here in Ohio; it came out at 2,460 (dry weight). The only additional weight
I've added is the coffee maker, dishware, utensils, cook ware, memory foam mattress topper, TV/DVD player (very lightweight), and electric tongue hitch, but can't remember if they were already in the trailer at the time I had it weighed. If not, they wouldn't add more than 100# of additional weight--even the electric tongue jack is no more than 15#. (There would, of course, be extra weight
with luggage and food that you take with you on any trip, but those wouldn't add much additional poundage, either.) The "spec" sheet from ParkLiner
has the dry weight
at about 2,300# and tongue weight at 220#; I've attached the link to that spec page below.
I've been towing the trailer with my 2010 Lexus RX450 Hybrid (with the Tow Package). My towing capacity is 3,500# and allowable tongue weight 400#, so you wouldn't have any trouble hauling it with your Highlander, which is actually a larger version of my Lexus; the tongue weight wouldn't be an issue, either.
I've had no problems at all towing the ParkLiner--it pulls like a tent trailer (except it blocks the rear view mirror)! It pulls easily on the road, never any swaying, and easy to see around with my vehicle's side mirrors. It's a very "user friendly" little trailer!
I do have a man coming to look at it Tuesday morning. If you're still interested, let me know and I'll contact you when I find out if he's interested or not.
I appreciate your question; if I didn't adequately answer it, please let me know!
ParkLiner Ultra-Light Camper Trailer Specs – ParkLiner Ultralight Travel Trailers