For now, DTM is arguably the highest category of motor racing suitable for the former BMW and Renault driver, given the limited mobility of his right arm.
"Of course I would rather be driving a formula one car," he is quoted as saying, "but I have to take one step at a time and hope that one day I get the opportunity to sit in a F1 car again."
After a long break from top-level competition in the wake of his 2011 rally crash, he insisted the high-downforce nature of his DTM test at Valencia was no problem.
"As long as I have enough space - and I do in a DTM car - then it's no problem," said Kubica.
He admitted a race seat is now a possibility.
"This was just a test to see how it feels to drive a DTM car," said the 28-year-old.
"The DTM season starts quite late, so there is a little more time. It's definitely a possibility, but it depends on various factors.
"But the most important one is that my pace is right and that I feel comfortable in the car."