DC Comics Presents # 2 - Race to the End of Time!

One of my all time favourite issues of any comic, this is the second part of the ultimate race between Flash and Superman, ultimate because it's not just across the earth, it's through the timestream itself, all the way to the end of the universe and the cosmic curtain that leads again to the beginning.  Each has been chosen as the champion of ancient warring space races, the Zelkot and Volkir.  I remember reading this when I was very young and it made a huge impression.  This issue is important to me because it was my first encounter with futuristic concepts related to the characters like Professor Zoom and the Legion of Superheroes.  It also introduced me to sci fi concepts like the timestream and the possible end of the universe.  If I recall, this ish also features an alternate origin of life on Krypton, relating somehow to biological matter that had once been left by the exhaust of the the living spaceships of one of the warring races, who both resemble funhouse mirror versions of Spock crossed with an ape.  I don't want to think too hard on "exhaust of the living spaceships", though I believe I also read somewhere Kryptonians evolved from two astronauts landing from another planet and populating the joint, Adam and Eve style.  Or maybe I dreamed that.  But gee - a contradiction in comics mythos!  Yes, quite a rarity.  Continuity - I never touch the stuff. 

Anyway, one of the issues' many bright moments comes when Superman encounters his boyhood self in the future with the Legion, and they somehow solve a problem by charging at each other at superspeed and banging their invulnerable heads together, which sends Superman into his past, so he then has to re enter the time stream and catch up with Flash.  Obviously I can't separate my appreciation of this story from nostalgia, it introduced me to many key DC concepts, but on a more objective level, it is quite an exciting story that moves at almost the speed of its two protagonists, and ends with Superman saying "After all, I've got all the time in the world!"  And here's the kicker - I've never read the first part!  Haven't gotten my hands on DCCP#1 so far.  Thank Rao for recaps, but the second half is always more exciting anyway.