Be prepared, as the Scouts said

It was mentioned in the comments to this item that a friend of mine had just bought an Infiniti M35, the less-expensive version of the marque's senior sedan. The M45, the pricier version, is the same car with a 4.5-liter V8 instead of the 3.5-liter V6; inasmuch as this is a superior V6 — Gwendolyn has an earlier 3.0-liter version — and they charge many thousands extra for the V8, buying the M35 makes more sense to me, and made more sense to her. In fact, she reports, the dealer let it go for a bit over $37k, putting it almost in the range of the current G, which gave me all kinds of ideas I didn't need.

(If you're wondering what happened to the Q45, it was dropped from the lineup after 2006.)

Instead of a key, they handed her something I once described as Not The Key in a G35 story:

Noting that this was a battery-operated device, she asked, sensibly enough, "How do I start the car if the battery is dead?" The salesperson gave her exactly the funny look you think he did.

"Well?"

Turns out that there's a slot somewhere on the dash in which you can shove the gizmo and still start the car. The slot in Nissan's Altima looks like this.

I should point out that the first time I drove a 2007 G35, they warned me not to let that thing get too close to a cell phone, or its little brain could be fried.