Bicycle for 2 x 30mins commute I plan to use my bicycle 5 days a week to get to work and back, approximately 30 minutes(~6 miles /10 km) one way, mostly good/ok roads but with some bumps here and there. 

Should I care about cx bicycles because of not perfect road conditions or typical road bicycle would be able to endure? 

I don't care about comfort that much and only carry my laptop with me in a backpack, so my priority is to get from one point to another and do it fast. Any recommendations?

Thank you.
A 10K commute is pretty short, I would say almost too short for a racing style bike for several reasons. I would recommend you look at tourer or hybrid bikes. Allow me to explain.

You say you are not really interested in comfort. I assume you will ride in your regular clothes. This is a bad combination. When done regularly, no matter the amount of discomfort you are prepared to take. A hard saddle and stiff frame, combined with the seams-in-stupid-places of your regular outfit will wear you down. Moreover, 5 days a week, regardless of weather means dirt everywhere, even on paved roads. Your clothes will get dirty, and you might even get mud in your hair, so you'd need to shower. But with a 10K commute the time it takes to change clothes and shower takes up a significant part of the total time you spend commuting. (if showers are available at your place of work). Some comfort -a good saddle and fenders- will save you time and pain.

Then there is the matter of durability. Think about the appointment you will miss because you had a flat 5K into your commute and you had to either walk 5K or take the time to fix the flat. This is just one of the many things that can break. Remember: "regardless of the weather" so dirt will accumulate, oil will wash off, things might rust. I expect you are not going to spend every weekend meticulously cleaning, checking and oiling everything, so you want durability.

My suggestion for a good commuter bike for 10K one way in your regular clothes would be a touring bike with full fenders (to keep away the mud) a chain guard, puncture proof road tires and a relatively comfortable saddle. This will be heavier, so your top speed will be lower, but any time that costs you you'll easily gain not showering, changing clothes, and fixing your bike.