I have enjoyed driving and owning this Matrix as my driving needs are constantly evolving. It handles the highway and the city with a flexible response, plus it averages nothing less than 30mpg in mixed driving conditions. It has good room for 4 large adults and with the seats folded down, it can haul 30 cases of beer. Having driven it in the snow and bad weather, it never fails or complains.
The car is rock solid at 80mph at 3k rpm and I like the headroom too. I also like the good gas mileage and the spacious feel it has.
More comfortable driving seats, like those in BMW or Saab. Also, 20 to 30 more horses under the hood would help too.