The BMW M340i looks elegant enough for the office carpark, and packs performance to reasonably enjoy a track day. If that's not a one-car solution, what is?
The 10-generation Lincoln Continental is long and lavish. However, its not alone in the domestic luxury car space. The Chrysler 300 is a comparable sedan.
The 2020 Lincoln MKZ left the market with the Ford Fusion and its larger sibling, the Continental. However, it might be the used midsize luxury car you're looking for.
BMW created a legacy with stunning GT cars. These days, there are plenty of used options that are cheaper than new BMW model with a much bigger thrill.