Another thing to note is that Fidelity and Schwab both have commission-free secondary-market treasury trading. This is much preferred to savings account rates. Oh and they allow you to participate in Treasury auctions too; you receive the so-called "high-rate" as a non-competitive bidder.
Yes! Fidelity even offers the option to "auto roll" treasuries and I believe CDs, so you can stay 100% invested without thinking about it. Great alternative to a government bond fund.
