Unless you pull the key from the ignition, the doors won't lock. Better yet is the remote keyless entry. I put that in the same category as power windows and power sideview mirrors. I'm sure no one would ever want to regress into the dark ages of winding the windows or adjusting the sideview mirrors by hand. After a few years, improvements that start out as options gradually become standard equipment, and then they are tweaked and improved upon.
Same thing applies to the engine.
A smooth running 3.1-liter V6 engine producing 175 horsepower powers the Century. That's 15 more horsepower than last year, but Buick didn't make any hoopla about it. You and I have come to expect more and more. And that's what we're getting. Leather seats add to the elegance, as do the six-way power controls.