Not recommended for first time owners.
They are really smart, though. I saw a documentary about dogs and they showed a BC that had been trained to recognize ~500 words for objects. The owner would have a box full of toys and say "banana" or any other object in the pile and the dog would get the stuffed banana from the pile. A researcher did 2 experiments with the same dog: First, she showed the dog a smaller version of a toy and ask the dog to fetch the normal sized version. Next, she would show a picture of the toy and the dog was successfully able to find the matching toy from the pile. That level of object recognition is supposedly equivalent to a 3 year old child.
I saw a BC that could pick out the correct toy out of thousands (yes thousands) of different toys. Then when they added an odd toy that he didn't know, they gave him a random name and told him to look for it, it took him a bit longer but he picked the new toy out of the pile despite having never been trained on the name of it. He identified it solely on the fact that the name was different than all the rest.
My BC goes with me on bike rides, but I do DH mountain bikign so I don't go on long rides, just hit big jumps and drops then hike back to the top. He races me to the bottom, but he's smart enough to move when I tell him to so I don't run him over, lol.
I think taking the dog on bike rides is fine as long as you pack some water for him and take periodic breaks. I wouldn't go any longer than a mile or two at a medium pace without taking a break. If you like to hit jumps and stuff then just sessioning a certain jump should be fine. It's the long distance stuff I would worry about.
He always goes insane over motorcycles. I don't know what it is, but he HAS to follow me if I'm on my dirt bike or sport bike, so I have to lock him in the house if I'm going for a ride. He got out one time and chased me like 8 miles before he caught up to me once I stopped and was bullshitting with a friend. I was shocked and he looked insanely tired so my friend threw him on his four wheeler and gave him a ride back.
Someone commented on how obsessive they get over their owner, I can attest to that. He will seriously stare at me constantly and if I even get up to go to the bath room he will jump up excitedly and follow me there, continuing to stare the whole time. At one point it was bad enough that he would try to bully girls that I would date. He would get in between us and if they tried to get closer he would jump up and bark in the face of the chick. I put an end to it very fast though and he's much better now.
He's also so protective that he will get really pissed off if I start to wrestle with a friend. He growls and barks, but he's not violent at all so he doesn't ever bite or even nip, he just makes alot of noise.