[DonC]

Can't speak for other manufacturers but I put a lot of miles on my ERA during a season (read June through Sep.) here in the northwet.
Longest one day trip Portland to San Francisco (640 miles). Arrived without aches and pains. Followed up with a couple of days in SFO then 3 days in Carmel and 3 days back up to coast back to Portland. Total for the trip about 1600 miles with my wife with me from SFO to Portland. Only put the top up once for cooler temps with heavy mist the second to last day. Would have taken another day on the return but were running in front of the rain coming back in to Portland.
Have driven down to Snakes to the Lake (about 500 miles Portland to Sacramento) and then up and around Lake Tahoe for a couple of days. Total for those about 1300 miles.
I do an annual run with the Denver club that covers 1000 to 1200 miles in 5 or 6 days. Last year with my wife. On the local scene we've been doing a 3 day run for the last 3 years and it's an easily doable event covering around 6 or 700 miles. Regular runs of 1 or 2 hundred miles are common.
Can carry enough with us that we don't need a laundromat for the 6 day shunts including my soft top and side curtains plus all the other junk that one normally keeps in the trunk (you just have to learn how to pack using the cheeks of the rear fenders).
Just finished my 6th season and have 44 thousand miles on the car. I usually arrive at my destinations without any more discomfort than I'd get in a "normal" car except for my cheeks being sore from smiling.
With the top up I've driven in temps as low as 40 degrees and been quite comfortable.
While not a "car for all seasons" the Cobra can be a viable second car. It still leaks a bit when driving in the rain (hey, this is a replica of a British sports car, by law it has to leak in the rain) but all things considered I wouldn't trade it for the world.
As a side note neither are they a purely young person's car. I just turned 69 and have no intention of slowing down any time soon.
DonC