No Chance. 25km in 34 min. This is Bangkok.

Maybe 1hr is a good time.

or direct

Oops. Go here

You can download the TM7.

Quote: "Travelers, under visa exemption scheme, arriving via an international airport will be given a 30 day visa exempt stamp, however people using OUT/IN method to extend their stay might be questioned after 6 visa exempt entries. There is no specific period given and there is no rule on how many visa exempt will be issued for one person. An old rule “90 days in a 180 days period” has been cancelled many years ago. As of 31st December 2016 Thailand limit visa exempt entries at land border to TWO per calendar year".

TM6 is the departure card. You don't go to the Airport.

You have to go to the office. Pick an office where you stay

Map: %2C101.67334039999992&z=6%2C101.9992&z=6

or look here

You need a copy of your passport (ident site and entry stamp with TM 6 card) a picture and 1900BHT. Go to immigration and fill out the TM7 form. That's all

Edit: and your passport