Heikki Kovalainen is confident Caterham are on the right track when it comes to their 2014 car, but concedes only time will tell how much they have progressed.
With F1 set for several rule changes next year, just about all the teams have already switched their focus to development of next year's cars and Caterham are no different.
Kovalainen, who rejoined the squad midway through this season as a reserve and test driver, feels the Leafield-based team should have a quicker car next year, but feels it's important to adopt a wait and see policy.
"Everything is progressing better than ever before, but whether it's good enough or not is hard to say," Kovalainen told ESPNF1. "With so many changes coming up you don't really know what other people are targeting. So we know that we're going to make a car that is quicker than this car but the question is are the top guys also going to make a car as quick as they have now or are they going to have to drop a little bit of performance because of the regulation changes?
"This is what we don't know, so that determines the gap that we're going to have next year and whether we can catch that up or not. So I'm quite happy so far with what I see how the team is performing. We're still a small team but we are working better and improving every area as I think we should do. I don't think there is any area which is particularly weak, but all the areas could be better I guess."
Kovalainen is also hopeful of returning to the Formula One grid next year as driver, but he admits he hasn't held talks with any of the teams just yet.
"I am not in discussion with any other teams and even with Caterham just at the moment I am just focussing on this role that they have given me this year and I have no firm plans for next year yet," he told Sky Sports F1.
"I think it is good. It is not 100%, but I'd say I have a good chance. Of course if a sponsor wants to give me a lot of money I don't mind, but I am not going after money."