Do you think cardano will over take ethereum in terms of tech with voltaire being worked on this year. Along with erc20 converter for easy conversion to cardano via ethereum. 
Why are there still questions like this? Obviously, Ethereum has more than Cardano. Ethereum will always be ahead of ADA. So, it looks like it will be difficult for Cardano to take over the Ethereum position or take over in all respects. They themselves are currently in the 8th position and it is very difficult to catch up with Ethereum. Not only that, can Cardano gain more trust than Ethereum? In my opinion, no, even very difficult. But, I also cannot deny that ADA is actually also a good altcoin that we can use for trading or even investing activities. However, if our expectation is to take over Ethereum or even to do what Ethereum has done so far, this will be a very difficult situation and we may not reach it.