First off, it appears that this lease price is for just for "current owners and lessees of all 1999 or newer GM vehicles." They will also have to pony up $4,999 at signing (all others will need $5,999). Second, the $699-a-month price is for a 39-month lease. Then, of course, "tax, title, license, dealer fees and optional equipment [are] extra" and "each dealer sets own price." Also, it appears that this lease deal is only good until the end of January. Cadillac started shipping the ELR plug-in hybrid coupe to dealers last month.
There are two things to note in the fine print. The most surprising is that the payments are based on "a 2014 Cadillac ELR with an MSRP of $76,000." That's $1,000 more than the official MSRP announced in October. Then we get to the real kicker: The lease limits you to a mere 32,500 miles, which is just 833.3 miles a month. Well, 'limit' isn't the exact word, since you can certainly drive more. All you have to do is pay 25 cents per mile for each mile over 32,500. Drive the national average of 13,476 miles in a year? That comes to 43,797 miles over 39 months, which is 11,297 extra miles and an extra $2,824.25.