That one in that video looks fantastic, and if it's anything like my 2011, it would be reliable and economical.The regal is a good road car. https://www.buick.com/sedans/regal/sportback
I would also recommend the Buick LaCrosse, a bigger and more comfortable-riding car. The 2017-2019 has the Auto Stop Start that you can't defeat without an aftermarket $150 part; the 2016 and earlier does not have that. My '16 is great.