Can I make 2 columns of cards showing at the same time?

Could you desribe what you mean? Twitter only shows one type of card per url, based on meta tags you provide.

I do not know hot to express myself for this item on short. With column I mean like rows stacked 1 over another. You know, when you click on a TWITTERS name (below this persons name are this persons TWITTS) and than this persons twitters page opens. There could be at lest 2 of such columns on my laptop 15" display. Imagine what could be done on 48"!

Ok, and what has this to do with Twitter Cards (the function that allows you to see article summaries or pictures etc.).

I apolgise. Misplaced issue. Was thinking of improving a different thing on twitter. Regards.