Bitcoin can reach 3000 USD in a year ?
No it cannot that would be very high, and bitcoin cant reached that price within a year only. It needs 2 or 3 years before it gets to the price wanted by some bitcoin users. Well gonna see more and big improvements in bitcoin after 2 years and it may lead to 5000$ price.
I would not say it's completely impossible for bitcoin to do so.
Let there be a positive ETF outcome, a break through with the block size problem or a few positive signals from major governments all around the world, and we could approch to a region near 3000$ per coin.
Of cours, that is pure speculation from my side, and chances that it will come this way are very small. But not impossible either.