The way i drive in to work every morning is
Pontprennau (home) > A48 - Off at the junction to get on to newport road, drive down newport road past the retail shops (Wicks, morrisons, etc) > carry on down newport road, which goes part the escape rooms, if you drive 20 meters down the road from here your at queen street train station - i leave in the morning around 07:15 to 07:30 - this time of the morning its not too bad however, if you do this same journey at around 08:00 to 08:30 or 08:45, the a48 is a horrendous nightmare. Peak traffic.
Yeh i work 2 seconds from the Red dragon centre. the carpark i use is the Qpark multistory which is behind the red dragon centre.
As for the city centre, i mean, I do go, although shopping ? maybe not so much, i generally still use online retailers. Even next in town now which i used to visit quite a lot for clothes, has been raising prices quite often. Althoguh i did go there a week or so ago to buy some new jeans.
There are parts of the city which has older shops and some of it which is much newer (IE newer part of st davids)
I think the smaller arcade shops in cardiff are quite good though. They do seem to be quite popular.
Walking around on a friday night is also quite entertaining.