You can always check out Subaru! They are coming out with a larger than ever Subaru, an Ascent, I believe, in the near future! We are very happy with our Forester right now, of course, as long as Subaru makes this model large enough for a concert grand harp! Car sizes do change from time to time, but the Forester has been large enough since at least 2015 for a 73″ tall concert grand, and you have the “beauty of all-wheel drive” in bad weather and for off-roading. Bear in mind that I am 5′ 6″ and don’t have to position the front seat very far back–a tall person would not have as much room behind the front seat. The Subaru Outback may have even more linear room than the Forester, which gives one another option. Hope this helps!
Harp Hugs,
Balfour