To dream of a go kart represents decision making that is focused on getting results as fast as you can get them. You ambition to finish something as fast as you can. Feeling good seeing progress or finishing something off quickly. A mindset focused on expediency. A reflection of your drive or ambition to reach a conclusion or get a situation over with.
Example: A man dreamed of driving a go kart. In waking life he had some credit card debt that he was eager to pay off as quickly as he could once new money opportunities came to him.